X0306 4 2021-06-25 0 0001000694 NOVAVAX INC NVAX 0001219864 YOUNG JAMES F C/O NOVAVAX, INC. 21 FIRSTFIELD ROAD GAITHERSBURG MD 20878 1 0 0 0 Common Stock 2021-06-25 4 M 0 7590 A 65090 D Common Stock 1500 I By spouse Restricted Stock Units 2021-06-25 4 M 0 7590 0.00 D Common Stock 7590 0 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of Novavax, Inc. (the "Company") common stock. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. One hundred percent (100%) of the RSUs subject to this grant under the Company's Amended and Restated 2015 Stock Incentive Plan, as amended, vested on the first anniversary of the June 25, 2020 grant date subject to continued service on the Company's Board of Directors through the vesting date. /s/ John A. Herrmann III, Attorney-in-Fact 2021-06-29